Sewing machines

Abstract

The invention relates to sewing machines, wherein the needle is mounted on the needle bar with both a transverse offset and an angular offset with respect to the axis of the needle bar. It may be applied to sewing machines for both domestic and industrial use.

What is claimed is: 
     
       1. In a sewing machine having a housing, a working surface and a needle attached for reciprocating movement on a rigid needle bar mounted for translation movement, the relative positions of said needle and needle bar remaining unchanged during operation of the machine, the improvement comprising positioning of said needle such that its longitudinal axis diverges downwardly from the axis of translation of said needle bar, and such that said longitudinal axis of said needle crosses the working surface of said machine at a point located outside the area lying beneath said housing, whereby said point is clearly visible to the operator of said machine. 
     
     
       2. The sewing machine according to claim 1, wherein the angle of divergence of said axes is between 4 and 10 degrees. 
     
     
       3. The sewing machine according to claim 2, wherein the angle of divergence of said axes is between 5 and 8 degrees. 
     
     
       4. The sewing machine according to claim 1, wherein said axis of said needle is offset towards the line of sewing with respect to the axis of translation of the needle bar. 
     
     
       5. The sewing machine according to claim 4, wherein said offset is no greater than 15 mm at the point of attachment of said needle. 
     
     
       6. The sewing machine according to claim 1, wherein the crossing point of said axis of said needle and said working surface is in the vertical plane passing through the edge of said housing. 
     
     
       7. The sewing machine according to claim 1, comprising a zig zag sewing machine. 
     
     
       8. The sewing machine according to claim 1, wherein the crossing point of said axis of said needle and said working surface is outside the vertical plane passing through the edge of said housing.